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Dehydration of un-irradiated and gamma and electron-beam irradiated europium acetate hydrate under non-isothermal conditions: kinetics of the dehydration process of un-irradiated material

  • Noura Mossaed Saleh EMAIL logo , Hisham Fouad Aly , Eman Abdelrahman Mahmoud Ahmed and Refaat Mohamed Mahfouz
Published/Copyright: December 24, 2024
Radiochimica Acta
From the journal Radiochimica Acta Volume 113 Issue 3

Abstract

The authors present here the decomposition of un-irradiated (pristine) as well as of gamma (γ) and electron beam (EB) irradiated samples of europium (III) acetate hydrate (EuAc.xH2O) in the temperature range of 25–900 °C in the air atmosphere. Two absorbed doses of 103 (γ-ray) and 102 kGy (EB) were examined. The profiles of the TG curves of the dehydration process display noticeable changes in induction periods and mass loss percentages by exposure to irradiation. The kinetics of the dehydration process were analyzed using both model-fitting and model-free approaches. The dehydration process was controlled by the phase boundary model (R2). The E a  −α plots indicate that the dehydration is not a complex process and follows one reaction mechanism. Powder X-ray diffraction displayed that europium acetate hydrate crystallizes in a monoclinic system (SG P2/m), and no phase transformation was detected by two sources of irradiation up to 103 (γ-ray) and 102 kGy (EB). Thermodynamic parameters of the dehydration process were calculated and assessed. A predicted thermogram (TG) of the isothermal dehydration of EuAc.xH2O was constructed from non-isothermal data and used to determine the reaction model and the kinetic parameters of the dehydration process.

Keywords: gamma irradiation; electron beam irradiation; non-isothermal dehydration; isoconversional approach; europium acetate hydrate
Corresponding author: Noura Mossaed Saleh, Chemistry Department, Faculty of Science, Assiut University, 71516, Assiut, Egypt, E-mail:

Acknowledgments

This work is part of Noura Saleh’s Ph.D. thesis. The authors thank Assiut University for the official technical and financial support. The authors also would like to thank the crew team of radiation units at the Egyptian Atomic Energy Authority for facilitating the irradiation experiments.

  1. Research ethics: Not applicable.

  2. Informed consent: Informed consent was obtained from all individuals included in this study, or their legal guardians or wards.

  3. Author contributions: The authors have accepted responsibility for the entire content of this manuscript and approved its submission.

  4. Use of Large Language Models, AI and Machine Learning Tools: None declared.

  5. Conflict of interest: The authors state no conflict of interest.

  6. Research funding: The researchers extend appreciation to the Postgraduate Studies & Research Sector, Assiut University for funding this work as a research number: AUN2025F.Sci.H0004.

  7. Data availability: Not applicable.

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Received: 2024-06-10
Accepted: 2024-11-27
Published Online: 2024-12-24
Published in Print: 2025-03-26

© 2024 Walter de Gruyter GmbH, Berlin/Boston

Articles in the same Issue

  1. Frontmatter
  2. Original Papers
  3. Single-atom-at-a-time adsorption studies of 211Bi and its precursor 211Pb on SiO2 surfaces
  4. Uptake of Eu, Th, U, and Pu by granite and biotite gneiss in Korean fresh groundwater under oxidizing and reducing conditions
  5. A new targetry system for cyclotron production of pharmaceutical grade indium-111 radioisotope
  6. Hierarchical macro/mesoporous γ-Al2O3 as column matrix for development of low specific activity 99Mo/99mTc generator via 100Mo (γ, n)99Mo reaction
  7. Design of a novel complex 99mTc-Nilutamide as a tracer for prostate cancer disorder detection in mice
  8. Dehydration of un-irradiated and gamma and electron-beam irradiated europium acetate hydrate under non-isothermal conditions: kinetics of the dehydration process of un-irradiated material
  9. Radiochromic liquid dosimeter based on p-arsanilic acid for gamma radiation monitoring
  10. Assessing carcinogenic radon levels in water from Er-Rachidia, Morocco using LR-115 nuclear track detectors
https://doi.org/10.1515/ract-2024-0317
Keywords for this article
gamma irradiation; electron beam irradiation; non-isothermal dehydration; isoconversional approach; europium acetate hydrate

Articles in the same Issue

  1. Frontmatter
  2. Original Papers
  3. Single-atom-at-a-time adsorption studies of 211Bi and its precursor 211Pb on SiO2 surfaces
  4. Uptake of Eu, Th, U, and Pu by granite and biotite gneiss in Korean fresh groundwater under oxidizing and reducing conditions
  5. A new targetry system for cyclotron production of pharmaceutical grade indium-111 radioisotope
  6. Hierarchical macro/mesoporous γ-Al2O3 as column matrix for development of low specific activity 99Mo/99mTc generator via 100Mo (γ, n)99Mo reaction
  7. Design of a novel complex 99mTc-Nilutamide as a tracer for prostate cancer disorder detection in mice
  8. Dehydration of un-irradiated and gamma and electron-beam irradiated europium acetate hydrate under non-isothermal conditions: kinetics of the dehydration process of un-irradiated material
  9. Radiochromic liquid dosimeter based on p-arsanilic acid for gamma radiation monitoring
  10. Assessing carcinogenic radon levels in water from Er-Rachidia, Morocco using LR-115 nuclear track detectors
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